El ColegiadoData on refereeing in the Liga

Alfonso Álvarez × Aritz Aduriz

22 matches of Aritz Aduriz (Athletic Bilbao, RCD Mallorca, Valencia CF) refereed by Alfonso Javier Álvarez Izquierdo, from 2006-07 to 2016-17.

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Player data: 2000-01 → 2021-22 only. Player-level match sheets come from Zenodo (BeSoccer, CC BY-NC 4.0 licence, non-commercial use). No free source provides them after 2021-22: more recent matches are not counted here. Penalties conceded are not attributed to players in the source, so they are not analysed.

In short

Alfonso Álvarez refereed 22 Liga matches in which Aritz Aduriz took part, from 2006-07 to 2016-17: 1,628 minutes played, 3 yellow cards and 1 red cards. With the other referees, over the same seasons (295 matches, 21,333 minutes), Aritz Aduriz receives 0.30 yellow cards per 90 minutes, against 0.17 with Alfonso Álvarez.

Verdict: no clear difference with the other referees.

Cards are rare (less than one per player per match): over a few dozen matches, only a very large deviation can be told apart from chance. "No clear difference" does not mean "no effect".

Matches

22

18 starts · 1,628 minutes · 10 seasons

Yellow cards

3for 5.4 expected

0.17 per 90 minutes with this referee · 0.30 with the others

no clear difference

Red cards

1for 0.4 expected

0.06 per 90 minutes with this referee · 0.03 with the others

no clear difference
For experts: statistical tests and method

Permutation test stratified by season: within each season, the player's matches given to this referee are drawn again at random among all the player's matches (same number per season). Deviation = (observed − expected cards) per 90 minutes played with this referee; positive = more cards than expected. q: Benjamini-Hochberg correction over the 3,781 pairs with at least 10 matches, separately for yellows and reds.

MeasureObservedExpectedDeviation / 90 minpqVerdict
Yellow cards35.39−0.1320.210.98no clear difference
Red cards10.43+0.0310.381.00no clear difference

The 22 matches

Minutes played and cards received by Aritz Aduriz in each match refereed by Alfonso Álvarez.

DateMatchTeamMinutesYellowsReds
16 Dec 2006Deportivo de A Coruña 0-2 Athletic BilbaoAthletic Bilbao↑ 54′ → 90′00
18 Feb 2007Athletic Bilbao 2-0 Getafe CFAthletic Bilbao0′ → 85′10
30 Sept 2007Villarreal CF 1-0 Athletic BilbaoAthletic Bilbao0′ → 90′00
23 Dec 2007Athletic Bilbao 1-1 Real Murcia CFAthletic Bilbao↑ 60′ → 90′00
30 Nov 2008Real Valladolid 3-0 RCD MallorcaRCD Mallorca0′ → 90′00
23 Apr 2009RCD Mallorca 2-0 Real ValladolidRCD Mallorca0′ → 79′00
18 Oct 2009RCD Mallorca 3-1 Getafe CFRCD Mallorca0′ → 74′00
13 Dec 2009CA Osasuna 0-1 RCD MallorcaRCD Mallorca0′ → 90′00
4 Apr 2010UD Almería 1-1 RCD MallorcaRCD Mallorca0′ → 66′00
23 Oct 2010Valencia CF 1-2 RCD MallorcaValencia CF↑ 46′ → 90′10
31 Jan 2011Racing de Santander 1-1 Valencia CFValencia CF0′ → 90′00
29 Jan 2012Racing de Santander 2-2 Valencia CFValencia CF↑ 63′ → 90′00
30 Sept 2013Granada CF 2-0 Athletic BilbaoAthletic Bilbao0′ → 71′00
28 Feb 2014Athletic Bilbao 4-0 Granada CFAthletic Bilbao0′ → 85′00
27 Apr 2014Athletic Bilbao 3-1 Sevilla FCAthletic Bilbao0′ → 88′00
29 Nov 2014Getafe CF 1-2 Athletic BilbaoAthletic Bilbao0′ → 90′00
25 Jan 2015Athletic Bilbao 1-1 Málaga CFAthletic Bilbao0′ → 90′00
4 Apr 2015Sevilla FC 2-0 Athletic BilbaoAthletic Bilbao0′ → 60′00
6 Dec 2015Athletic Bilbao 0-0 Málaga CFAthletic Bilbao0′ → 89′00
13 Feb 2016Real Madrid CF 4-2 Athletic BilbaoAthletic Bilbao0′ → 90′00
14 May 2016Athletic Bilbao 3-1 Sevilla FCAthletic Bilbao0′ → 90′00
28 Nov 2016UD Las Palmas 3-1 Athletic BilbaoAthletic Bilbao0′ → 74′11

↑: came on as a substitute. Stoppage time is not recorded in the source: minutes stop at 90.

Aritz Aduriz with other referees

  • David Fernández Borbalán26 matches
  • Estrada Fernández23 matches
  • Mateu Lahoz20 matches
  • Carlos Velasco Carballo19 matches
  • Del Cerro Grande18 matches
  • Carlos Clos Gómez17 matches
  • César Muñiz Fernández17 matches
  • Gil Manzano16 matches
  • González González15 matches
  • Fernando Teixeira Vitienes15 matches
  • Undiano Mallenco15 matches
  • Martínez Munuera14 matches
  • Ayza Gámez12 matches
  • Hernández Hernández12 matches
  • Pérez Montero11 matches
  • Iglesias Villanueva10 matches
  • Ramírez Domínguez10 matches